Title:
HERMETIC ELECTRIC COMPRESSOR AND FREEZING AIR CONDITIONER USING THE SAME
Document Type and Number:
Japanese Patent JP2014080939
Kind Code:
A
Abstract:
To prevent high temperature demagnetization of rare earth magnets for use in a motor by facilitating cooling of the motor by a discharge gas.
A hermetic electric compressor of the invention includes: a compression mechanism which compresses a refrigerant; an electric motor which drives the compression mechanism; and a sealed container which stores the compression mechanism and the electric motor and reserves a lubrication oil at a bottom part. The electric motor includes a stator, a rotator, and a balance weight fixed to the rotator. The rotator includes permanent magnets. A part of or all of the permanent magnets are Nd-Fe-B based magnets. The balance weight has a circumferential groove on an outer peripheral surface.
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Inventors:
MURAKAMI AKIHIRO
TAKANO RYUSUKE
KONO TAKESHI
OSHIMA KENICHI
SHIMADA ATSUSHI
TAKANO RYUSUKE
KONO TAKESHI
OSHIMA KENICHI
SHIMADA ATSUSHI
Application Number:
JP2012230435A
Publication Date:
May 08, 2014
Filing Date:
October 18, 2012
Export Citation:
Assignee:
HITACHI APPLIANCES INC
International Classes:
F04B39/00; F04B39/04; F04B39/06; F04C29/00; F04C29/04; F25B1/00
Domestic Patent References:
| JP2009235948A | 2009-10-15 | |||
| JP2007154657A | 2007-06-21 | |||
| JP2009162168A | 2009-07-23 | |||
| JP2000032715A | 2000-01-28 | |||
| JP2000116080A | 2000-04-21 | |||
| JP2000249384A | 2000-09-12 | |||
| JP2012154212A | 2012-08-16 | |||
| JPH0828476A | 1996-01-30 | |||
| JPH0536088U | 1993-05-18 | |||
| JP2010138863A | 2010-06-24 |
Attorney, Agent or Firm:
Manabu Inoue
Yuji Toda
Shigemi Iwasaki
Yuji Toda
Shigemi Iwasaki
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